Switching valve



FIG. 1 is a side elevational view of a switching valve showing my new design;

FIG. 2 is a view similar to FIG. 1 rotated 180 degrees;

FIG. 3 is a view similar to FIG. 1 rotated 270 degrees;

FIG. 4 is a view similar to FIG. 1 rotated 90 degrees;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines showing of unclaimed portions of the switching valve form no part of the claimed design. 

The ornamental design for a switching valve, as shown and described. 